20051+2039 BLL  44AD

 
 
20h 05m 04.91s +20 38' 53.3" P.A. 95.00 sep 75.3 mag 8.75,12.20 Sp C6II
 
 
Coord 2000
20051+2039
Discov num
BLL  44
Comp
AD
Coord arcsec 2000
20 05 04.91 +20 38 53.3
Date first
1879
Date last
2015
Obs
9
Pa first
96
Pa last
95
P.A. Now (θ)
95°
Sep first
77.1
Sep last
75.3
Sep. Now (ρ)
75.3"
Mag pri
8.75
Mag sec
12.20
delta mag (ΔM)
3.45
Spectral class
C6II (red carbon star)
Pri motion ra
+001
Sec motion ra
-003
Pri motion dec
-001
Sec motion dec
+000
Notes
N (See Notes)
Visually invisible, K-band or other infrared star rPM=1.374
This double is not physical.
 
 
20051+2039 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 88158 20051+2039 BUP 203 AB 1895 2015 7 247 13.4 8.75 13.50 4.75
Show 88158 20051+2039 BUP 203 AC 1895 2015 8 102 59.4 8.75 12.97 4.22
Show 88158 20051+2039 BLL 44 AD 1879 2015 9 95 75.3 8.75 12.20 3.45 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
95.2
Precise sep
75.313
Constellation
Sagitta
SAO
88158
Tycho2
1629-01033-1
Gaia DR2
43707604736
HD
190606
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20051+2039 BLL 44 AD 2000 4 95 75.3 8.75 12.20 D 200504.91+203853.3
20051+2039 BLL 44 AD 2001 5 96 75.5 8.75 12.20 N D 200504.91+203853.3
20051+2039 BLL 44 AD 2015 6 95 75.3 8.75 12.20 C6II N 200504.91+203853.3

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